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OpenStudy (anonymous):
Down syndrome is an example of trisomy. How many chromosomes will each cell of an individual have in Down syndrome?
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OpenStudy (aaronq):
Humans have 46 chromosomes, trisomy 21 means that there are 3 chromosomes at the 21st position instead of 2 (from non-disjuction in meiosis). so 46+1
OpenStudy (anonymous):
Welcome to Open study ^_^
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